Dacorogna, Bernard <br/><br/>
Direct methods in the calculus of variations  / 

 - 2nd 
 - New York:  Springer Science+Business Media, Inc.,  2008 
 - xii, 619p. Bibl. Index. 
 - Applied Mathematical Sciences   V. 78 .
<br/><br/><label>ISBN: </label>9780387357799 
<br/><br/><label>Dewey Class. No.: </label>515.64  / D118.DM